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Component operating with bulk acoustic waves, and having coupled resonators

  • US 20040124952A1
  • Filed: 12/11/2003
  • Published: 07/01/2004
  • Est. Priority Date: 12/13/2002
  • Status: Active Grant
First Claim
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1. A component operating with bulk acoustic waves, comprising:

  • an acoustic mirror comprising an electrically conductive mirror layer that acts as a coupling layer;

    a signal path along which an electrical signal is guided; and

    a number N of resonators that are electrically connected to one another and each having a lower and an upper electrode, with n resonators, where 2≦

    n≦

    N−

    1, being arranged jointly and alongside one another on the acoustic mirror, the n resonators being coupled to one another via coupling capacitances that are formed;

    a) by lower electrodes of the n resonators, and b) by at least one of the coupling layer and further capacitively coupled electrically conductive mirror layers, with the n resonators being arranged and electrically connected to one another such that the coupling capacitance does not bridge any of the resonators in the signal path.

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